THE VARIARC HELMET MOUNT SHINES LIGHT WHERE YOU NEED IT: With locking teeth biased to the forward position, the VariArc keeps your light aligned for the most critical uses, but with a firm twist, the VariArc mount unlocks and rotates through 8 additional lower-force index points for administrative tasks and diffused lighting options; Works in vertical positions for umbrella lighting rooms, canopy illumination, IR strobe signaling, and can be used at downward angles for admin & task lighting DESIGNED BY EXPERTS & BUILT FOR ABUSE: Designed and made in the USA, the VariArc has durable, reinforced polymer construction with steel hardware; Conceived by a veteran SWAT team leader with input from active-duty special operations soldiers, its small footprint and low-profile keep things tidy and the Picatinny Rail allows for maximum compatibility with visible and IR lights; It functions through extreme temperatures, dirt, dust, sand, water, drops on concrete, and rough handling RETAIN YOUR CRITICAL GEAR: The VariArc features retention holes on both ends for retention wiring of your critical gear; The VariArc is compatible with standard 1913 Picatinny Rail Lights such as Surefire Scout, X300, XH35, Vampire, XC1/2, and similar; The VariArc is also compatible with Streamlight TLR-1, TLR-VIR, TLR-7-8, and similar; Additionally, the VariArc is compatible with INFORCE APL, APLc, and Arisaka Side Scout Mount BUILT SPECIFICALLY FOR YOUR HELMET RAILS: This model of VariArc is compatible with a Team Wendy Helmet, then acts as a Picatinny Accessory Rail with 3 slots and 4 ridges; Thyrm manufactures four different VariArc models that are each compatible with Dovetail, Team Wendy, and MLOK helmets or mounts, and a fourth is universal; Each order comes with ONE VariArc; Please verify your helmet compatibility; See all models in the table below JUST MOUNT AND GO- DON'T ADJUST CENTER SCREW: No tools are required for installation; Just slide the VariArc onto your helmet rail, mount your light on the picatinny section of the VariArc, then twist firmly to verify rotation; Indexing will be tight for the first couple of rotations; Do NOT loosen the adjustment screw before mounting; You DO NOT need to adjust the center screw unless you find the tension has loosened with extended use UPC 712198321965 ASIN B08NY2PFW3 Color Flat Dark Earth Brand Name Thyrm Item Depth 0.75 inches Unit Count 1.0 Count Item Weight 1 Ounces Finish Types Matte Manufacturer Thyrm Model Number VTW1-4 Material Type Plastic Mounting Type Helmet Mount Item Type Name Helmet Mount Item Dimensions 2.25 x 1 x 0.75 inches Manufacturer Warranty Description Lifetime